18 32 081 Removing And Installing/Replacing Exhaust Pipe With Catalytic Converter For Cylinders 1-3 (N54)

WARNING: This page is about a different car, the 2010 BMW 135i, 2009 BMW 135i, and 2008 BMW 135i. However, it is still accessible from the selected car via links, so may be relevant.

Special tools required:

00 2 210

WARNING: Scalding hazard!
Only perform these tasks after exhaust system has cooled down.

Necessary preliminary tasks:

E91/ E92/ E93/ E82/ E88 only Remove tension strut . See 51 71 482 REMOVING AND INSTALLING/REPLACING LEFT OR RIGHT TENSION STRUT (ON REAR AXLE) .

NOTE: Cutting line for exhaust pipe (1) is designated by a notch in the pipe.

Fig 1: Identifying Exhaust Pipe Line

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Cut exhaust pipe with special tool 00 2 210 at marked point and deburr.

Fig 2: Cutting Exhaust Pipe With Special Tool 00 2 210

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Release nuts for left exhaust pipe.

Installation:

Replace self-locking nuts.
Replace seal.
Tightening torque. See 18 00 1AZ in 18 00 EXHAUST ASSEMBLY .

Fig 3: Locating Exhaust Pipe Nuts

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Release screw.

Tightening torque. See 18 20 1AZ in 18 20 EXHAUST SYSTEM SUSPENSION .

Remove bracket (1) and then exhaust pipe.

Fig 4: Locating Exhaust Pipe Bracket Bolt

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Installation:

Connect exhaust pipe to center muffler by means of clamp and align.

Align clamp and tighten down.

Tightening torque. See 18 00 5AZ in 18 00 EXHAUST ASSEMBLY .

Fig 5: Identifying Exhaust Pipe Clamp

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NOTE: Check exhaust system for leaks.